Which of the following reagents would not be a good choice for reducing an aryl nitro compound to an amine?

• A. H₂ (excess)/Pt
• B. LiAlH₄ in ether
• C. Fe and HCl
• D. Sn and HCl

When considering the reduction of an aryl nitro compound to an amine, it's important to choose the right reagent. Among the options provided, one stands out as less effective.

Reagents Overview

• H₂ (excess)/Pt: This is a strong reducing agent and works well for reducing nitro groups.
• LiAlH₄ in ether: A powerful reducing agent that can effectively reduce nitro compounds to amines.
• Fe and HCl: This combination is commonly used for the reduction of nitro groups and is effective.
• Sn and HCl: This reagent is also suitable for reducing nitro groups to amines.

Identifying the Ineffective Reagent

While all the other options are effective, LiAlH₄ in ether is not typically used for this specific reduction. It is more commonly applied to reduce carbonyl compounds and may not be as effective for nitro groups compared to the others listed.

In summary, the reagent that would not be a good choice for reducing an aryl nitro compound to an amine is LiAlH₄ in ether.